The correct answer is option 3 - Concurrent list. The Indian Constitution includes Economic Planning in the Concurrent list.

To understand this, we must first understand the three lists mentioned - Union list, State list, and Concurrent list. The Union list contains subjects on which only the central government has exclusive jurisdiction. The State list contains subjects on which only the state governments have exclusive jurisdiction. The Concurrent list contains subjects on which both the central and state governments can make laws.

Economic planning involves the formulation and implementation of strategies to achieve economic growth and development. Since economic planning requires coordination between the central and state governments, it falls under the Concurrent list. This allows both levels of government to participate in the economic planning process and implement policies to achieve desired development goals.

Therefore, Economic Planning is included in the Concurrent list in our Constitution.